<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script src="https://cdn.jsdelivr.net/npm/vue@2.6.12"></script>
	</head>
	<body>
		<div id="app">
			<select name="city" v-model="city">
				<option value="北京" >北京</option>
				<option value="上海">上海</option>
				<option value="天津">天津</option>
			</select>
			
			<p>城市是:{{ city }}</p>
		</div>
		<script>
			let app =new Vue({
				el:"#app",
				data:{
					city:"北京",
				}
			})
		</script>
	</body>
</html>
